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    • Keywords


      Ceramics; oxides; electron microscopy; X-ray methods; magnesium niobate.

    • Abstract


      A gel was formed when a aqueous solution of Mg(NO3)2, NbF5 and citric acid in stoichiometric ratio was heated on a water bath. No precipitation was observed at acidic pH and gellation was complete with evaporation of the solvent. This gel on decomposition at 750°C produced nanocrystallites of ternary oxide, Mg4Nb2O9 (M4N2). The phase contents and lattice parameters were studied by powder X-ray diffraction (XRD) at various temperatures. Particle size and morphology were studied by transmission electron spectroscopy (TEM). For comparison, M4N2 powders were also prepared by conventional ceramic route at 900°C.

    • Author Affiliations


      A Vadivel Murugan1 A B Gaikwad2 V Ravi3

      1. Centre for Materials for Electronics Technology (C-MET), Department of Information Technology, Pune 411 008, India
      2. Centre for Materials Characterization, National Chemical Laboratory, Pune 411 008, India
      3. Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India
    • Dates

  • Bulletin of Materials Science | News

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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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      Posted on July 25, 2019

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